Finding the Fourth Proportional to 111.58, 167.37 and 104.09

Step by Step Solution

1. Step 1: Write the proportion equation
   111.58 : 167.37 = 104.09 : x
2. Step 2: Convert to fraction form
   111.58/167.37 = 104.09/x
3. Step 3: Cross multiply
   111.58x = 167.37 × 104.09
4. Step 4: Simplify right side
   111.58x = 17,420.32
5. Step 5: Solve for x
   x = 17,420.32/111.58
6. Step 6: Final answer
   x = 156.13